SPORT_PEEK_LINE (W*32, W*64)

Serial Port I/O Function: Returns information about the availability of input records.

Module

USE IFPORT

Syntax

result = SPORT_PEEK_LINE (port [,present] [,count])

port

(Input) Integer. The port number.

present

(Output; optional) Integer. 1 if data is present, 0 if no data has been read.

count

(Output; optional) Integer. The count of characters that will be returned by SPORT_READ_DATA.

Results

The result type is INTEGER(4). The result is zero if successful; otherwise, a Windows* error value.

This routine will only return when a line terminator has been seen - as defined by the mode specified in the SPORT_CONNECT( ) call.

Note iconNote

CR and LF characters may not be returned depending on the mode specified in the SPORT_CONNECT( ) call.

Compatibility

CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB

Example

USE IFPORT

INTEGER(4) iresult

INTEGER present

INTEGER count

iresult = SPORT_PEEK_LINE( 2, present, count )

END

See Also